JPH03232643A - Paper sheet separation device - Google Patents

Abstract

PURPOSE:To prevent the skew of sheets even when a plurality of sheets enter between a peel roller and a picker roller by providing a control means to control the speed of a drive means based on information from a detecting means to detect the state of sheets under separation. CONSTITUTION:In a motor control circuit (a), a timing at which a separated bank note passes is detected by means of two detecting sensors 15 on both sides, and signals therefrom are inputted to a first interface 23. A difference in a pass time of a bank note between the detecting sensors on both sides is computed by a computing part 24. According to the magnitude of the pass time difference, the rotation speed of a motor 29 is assigned based on a control table and inputted to a control part 26. Namely, from a lag time between the pass timings on both sides, a skew amount of a bank note is computed, and the speed of a motor on the side where a bank note is conveyed ahead is decreased for a specified time so that the skew amount is reduced to a value lower than a specified value. Meanwhile, the control part 26 charges the motor 29 with a control current through a second interface 27.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a banknote separating device having a function of correcting skewed feeding of banknotes occurring in a banknote separating section of an automatic cash handling device.

[Conventional technology]

As described in Japanese Patent Application Laid-Open No. 1-187152, the conventional technology is to detect the state of paper sheets at the time of separation using a skew detection sensor in a banknote dispensing mechanism, and to control the peeling roller based on the detected information. The skew was corrected by rotating it in the opposite direction.

[Problem to be solved by the invention]

The above-mentioned conventional technology does not consider the case where multiple sheets of paper enter between the peeling roller and the picker roller while separating the sheets, and if multiple sheets of paper happen to enter between , the effect of correcting the skew of paper sheets to be separated and fed out is reduced.

An object of the present invention is to provide a separation device that can prevent paper sheets from being skewed even when a plurality of paper sheets enter between a peeling roller and a picker roller.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a detection means for detecting the state of the paper sheets being separated, and at least one on the left and right sides for applying a feeding force to the paper sheets without contacting the accumulated paper sheets. a set of dispensing means, a peeling means for applying force to separate the paper sheets so that multiple sheets of filtered paper sheets are not sent out at the same time; The separating means includes a drive means for independently driving the left and right sides, and is characterized in that the separation means includes a control means for controlling the speed of the drive means based on information from the detection means.

[Effect]

The paper sheet detection means detects the amount of skew of the separated paper sheets, and the control means determines the speed of the left and right drive means necessary to correct this skew, and the drive means is operated at this speed. control the operation. On the other hand, the driving means independently drives the feeding means and the feeding means on the left and right sides based on instructions from the control means.

As a result, the paper sheets that are about to be separated in a skewed manner are given independent conveying speeds on the left and right sides thereof, so that the skewed feeding described above is corrected and the sheets are sent out from the separating section.

Furthermore, it goes without saying that the above-mentioned effects can be obtained even if the feeding means and the feeding means are made common and constitute one constituent means.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. FIG. 1 shows a system diagram of a device that handles banknotes, which are one type of paper sheet. The banknote handling device 1 includes a deposit/withdrawal port 2 for depositing and withdrawing banknotes into the device, a separating section 3 for separating the deposited banknotes one by one, and a part for determining the authenticity of the separated banknotes and for determining whether the banknotes are severely damaged or not. a discriminating section 4 for discriminating unfit bills; an unfit bill box 5 for storing unfit bills; and a stacking section 7 for returning bills determined as counterfeit bills by authenticity determination to the deposit/withdrawal port 2;
A pushing unit 8 for pushing the banknotes accumulated in the stacking unit 7 to the deposit/withdrawal port 2, a primary stacker 6 for temporarily storing banknotes deemed normal by the discrimination unit 4, Thousand yen recycling box 10 for storing yen and yen separately
, a 10,000 yen recycling box 11, a safe 12 for replenishing and collecting banknotes into the 1,000 yen recycling box 10 and the 10,000 yen recycling box 11, and reversing the banknotes determined to be genuine by the above-mentioned identification unit 4. It is equipped with a front-back reversing mechanism 9 for aligning the front and back sides. - Next stacker 6, 1,000 yen recycling box 10, 10,000 yen recycling box 11, and safe 12 all have a stacking section 7 for stacking banknotes sent one by one, and the stacked banknotes are transferred again. - Separation section 3 for separating and taking out each sheet
It is equipped with In addition, the above-mentioned deposit port 2. - A pair of belts 1 running opposite each other between each element of the next stacker 6, etc.
3b is arranged, and conveys the banknote between each element by sandwiching the banknote between the belts.

Figures 2 and 3 show the above-mentioned primary stacker 6,000 yen recycling box 10. FIG. 2 is an explanatory diagram of the operation of the separation section 3 and the accumulation section 7 in the 10,000 yen recycling box 11 and the safe 12. FIG. 2 shows the operation of the separation section 3, and FIG.
This figure shows the individual operations of the following.

Next, the configuration and operation of the separating section 3 will be explained with reference to FIGS. 2 and 5.

3a is a feeding roller for feeding forward the topmost banknote A of the stacked banknotes, which is arranged at symmetrical positions on the left and right, and a part of the surface is made of a rubber material and is pressed against the stacked banknotes. Rotate with.

The driving source for this rotation is a feed roller 3c which will be described later. That is, the rotational force of the shaft of the feed roller 3C is transferred to the belt 1.
4 to drive the feeding roller 3a.

3c is a feed roller that separates the banknotes A fed out by the feeding roller 3a one by one and sends them to the next conveying means 13, and is arranged at symmetrical positions on the left and right, although not shown in the figure. It is driven by the required number of rotations by pulse motors placed on each side.

Reference numeral 3b denotes a separating roller for separating two or more bills into individual bills, which is fixed and constructed of a rubber roller having a high coefficient of friction with the bills.

The separation roller 3b is disposed opposite to the feed roller 3C at a position offset from the feed roller 3C in the axial direction, and is intertwined with each other in the radial direction.

15 is a first sensor for detecting the timing of passage of banknotes, and the same sensors are arranged at symmetrical positions on the left and right.
15a is a light emitting sensor, and 15b is a light receiving sensor. These sensors 15a and 15b are arranged immediately after the feed roller 3c on both sides of the surface through which the banknote A passes, and are placed so as to output an output when the banknote A passes.

13b is a belt for holding and conveying banknotes A.

A pair of belts are placed facing each other.

13a is a guide roller for running the belt 13b. Further, the belt 13b is driven to run by another drive roller (not shown).

The push plate 16 engages with a ball screw 17 and moves upward and downward as the ball screw 17 rotates.

The ball screw 17 is rotated by power from a motor 19 via gears 18a and 18b. When separating banknotes, the push plate 16 pushes up and down the stacked banknotes A, and the feeding roller 3a
bring into contact with. In this case, the contact state between the payout roller 3a and the stacked banknotes is confirmed by the detection means 32 that detects the position of the payout roller 3a.

Next, a control system for the motors that drive the two sets of left and right independent feed rollers 3c and delivery rollers 3a will be explained using FIG. 4.

As shown in FIG. 4, the control circuit for the motor 29 includes a first interface 2 for receiving the output of the sensor 15.
3. Calculation section 24 for performing calculations. Control table 25 for obtaining a target value to be given to the feed roller driving motor 29, which is the controlled object, based on the calculation results. A calculation unit 24 for controlling the motor 29 based on the target value. It consists of a second interface 27 for transmitting control signals to the motor 29.

That is, the passage timing of the separated banknotes is detected by the two left and right detection sensors 15, and this is input into the first interface 23, and the calculation unit 24 calculates the difference in the passage time of the banknotes between these left and right detection sensors. , the rotational speed of the motor 24 is specified based on a predetermined control table according to the magnitude of this passing time difference, and is given to the control unit 26. That is, the skew amount ΔQ of the banknote is calculated from the time difference between the left and right passage timings, and the speed of the drive motor on the side where the banknote is leading is set as shown below so that the skew amount is below a certain value. Decelerates for a certain period of time.

The motor speed when detected by the sensor 15: V, the deviation time between the left and right passing timings: Δ, is defined as the deceleration time: T.

On the other hand, the control unit 26 applies a control current to the motor 29 via the second interface 27 to control the rotational speed of the motor 29 .

Next, the configuration and operation of the accumulation section 7 will be explained.

The stack guide 20 is rotatably supported around the axis of the roller 21 as the center of rotation. The conveyor belt 13b is wound around a roller 21 and is driven by a drive means (not shown). The sensor 22 is a second optical sensor and detects contact with the stacked banknotes.

When banknotes are stacked, the above-mentioned push plate 16 moves downward, and the stacked banknotes are lowered by the push plate 16 so that the stacked banknotes do not block the optical path of the upper end detection sensor 22 of the stacked banknotes, so that a space is always formed above.

On the other hand, banknotes sent by the conveyor belt 13b are guided and stacked by a stack guide 20.

The above configuration enables the following operations.

In the separating section 3, the stacked banknotes A are pressed against the payout roller 3a by a push plate, and in this state, the payout roller 3a rotates to feed out the banknote B between the feed roller 3b and the separation roller 3C, where the feed roller 3b rotates. By doing so, the banknotes can be separated one by one and delivered to the next conveyance path. In this case, the conveyance posture of the banknote B can be controlled by the sensor 15 provided immediately after leaving the separator 3 before the banknote B is sent out to the next conveyance path 13 .

On the other hand, in the stacking unit 7 for one banknote B, the stack guide 20 guides the banknotes B conveyed one by one to the denomination box 10.
．． They can be deposited in the safe 11 or the safe 12 in good alignment.

The above operations produce the following effects.

Since the banknotes separated by the separator 3 are always conveyed in an oblique posture of less than a certain amount, the discrimination section 4 located after the separator 3
The banknote discrimination operation can be performed normally, and the banknotes can be stacked in an orderly manner in the banknote stacking section 7 without interfering with each other.

Further, since the conveyance direction switching unit 31 for banknotes B also guides the following banknotes in a different direction after guiding the preceding banknotes, the gate 3o and banknotes B do not interfere even when the gate 30 is switched. , can guide you.

Further, the same effect can be obtained by controlling the driving speed of the motor for correcting the skew of the banknotes using a table set in advance according to the amount of delay in the passage timing of the banknotes.

〔Effect of the invention〕

According to the present invention, since the skewed state of paper sheets after separation can be kept below a predetermined value, it is possible to prevent incorrect processing of banknotes in the post-processing section for these paper sheets, such as the identification, gate actuator, and stacking section. You can do it without any problems.

[Brief explanation of drawings]

FIG. 1 is a system diagram of an embodiment of the apparatus to which the present invention is applied, FIG. 2 is an explanatory diagram of the operation of the separation section in FIG. 1, and FIG. 3 is an explanatory diagram of the operation of the accumulation section in FIG. 1. FIG. 4 is a block diagram of a control system according to the present invention, and FIG. 5 is an explanatory diagram showing the configuration of a separating section. 3... Separation part, 7... Accumulation part, 15... First sensor, collection (2) 2nd (2) 2Z-... and apical rainbow 1ω Senfubi force/3b

Claims (1)

[Scope of Claims] 1. A paper sheet handling device comprising a separating means for separating stored paper sheets one by one, and a conveying means for conveying the separated paper sheets. A detection sensor for detecting the conveyance state of the paper sheets that are intermittently conveyed; and a sensor for controlling the separation speed of the paper sheets by the separation means based on information from the detection sensor. A paper sheet separation device comprising: a control means; and at least one pair of drive means on the left and right sides for operating the separation means based on information from the control means.